CN202402347U - Low-noise centrifugal fan - Google Patents
Low-noise centrifugal fan Download PDFInfo
- Publication number
- CN202402347U CN202402347U CN2011205206680U CN201120520668U CN202402347U CN 202402347 U CN202402347 U CN 202402347U CN 2011205206680 U CN2011205206680 U CN 2011205206680U CN 201120520668 U CN201120520668 U CN 201120520668U CN 202402347 U CN202402347 U CN 202402347U
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- CN
- China
- Prior art keywords
- blade
- low
- centrifugal fan
- utility
- noise
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a low-noise centrifugal fan, and belongs to the technical field of fans. The low-noise centrifugal fan comprises a fan impeller consisting of a plurality of blades and a circular plate; the impeller is connected with a power source through transmission systems; two sides of each blade have a shape of a convex arc; a connection sheet is integrally arranged at the bottom of each blade and is provided with installation holes; and the included angle between each blade and the connection sheet is an acute angle. According to the low-noise centrifugal fan, the two sides of each blade have the shape of the convex arc, so that the influence caused by eddy current at the outer end of each blade can be reduced; and therefore, a flow field can be stabilized, the noise caused by the eddy current can be reduced, and the rigidity of the connection between the blades and the circular plate can be increased by the connection sheets.
Description
Technical field
The utility model relates to the blower fan technical field, is specifically related to a kind of low-noise centrifugal ventilator.
Background technique
Centrifugal blower is the universal machine that has a large capacity and a wide range; In national economy, occupy certain status; The social demand amount is very big, thereby its performance is good and bad extremely important, and its blade of the centrifugal blower of prior art is the plank frame in uniform thickness cross section; The shape in its uniform thickness cross section makes the blade outer end cause air whirl, causes that present centrifugal blower efficient is low, noise is big.
Summary of the invention
The utility model is to overcome the defective of existing technology, and a kind of low-noise centrifugal ventilator is provided.
In order to solve the problems of the technologies described above, the utility model provides following technological scheme:
A kind of low-noise centrifugal ventilator; Comprise the fan impeller that constitutes by some blades and disk; Said impeller connects power source through transmission system, and said blade two sides is outer convex, and one-body molded bottom the said blade have a connecting sheet; Said connecting sheet is provided with mounting hole, and the angle of said blade and connecting sheet is an acute angle.
The blade two sides of the utility model is outer convex, reduces the influence that eddy current produced of blade outer end, but therefore steady flow condition and reduce the noise that eddy current produces, the rigidity that connecting sheet increase blade is connected with disk.
Description of drawings
Accompanying drawing is used to provide the further understanding to the utility model, and constitutes the part of specification, is used to explain the utility model with the embodiment of the utility model, does not constitute the restriction to the utility model.In the accompanying drawings:
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the structural representation of blade.
Mark is following among the figure: 1-blade, 2-impeller, 3-transmission system, 4-volute of blower, 5-connecting sheet.
Embodiment
Describe below in conjunction with the preferred embodiment of accompanying drawing, should be appreciated that preferred embodiment described herein only is used for explanation and explains the utility model, and be not used in qualification the utility model the utility model.
As shown in Figure 1, the fan impeller 2 that is made up of blade 1 makes impeller 2 rotations under the drive of transmission system 3, and air-flow flows into volute of blower 4 and compiles the back discharge through the blade on the impeller 21 along centrifugal direction, accomplishes ventilation function.
What should explain at last is: the above is merely the mode of execution of explanation the utility model; Be not limited to the utility model; For a person skilled in the art; All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the utility model.
Claims (1)
1. low-noise centrifugal ventilator; Comprise the fan impeller that constitutes by some blades and disk; Said impeller connects power source through transmission system, and it is characterized in that: said blade two sides is outer convex, and one-body molded bottom the said blade have a connecting sheet; Said connecting sheet is provided with mounting hole, and the angle of said blade and connecting sheet is an acute angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205206680U CN202402347U (en) | 2011-12-13 | 2011-12-13 | Low-noise centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205206680U CN202402347U (en) | 2011-12-13 | 2011-12-13 | Low-noise centrifugal fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202402347U true CN202402347U (en) | 2012-08-29 |
Family
ID=46699997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205206680U Expired - Fee Related CN202402347U (en) | 2011-12-13 | 2011-12-13 | Low-noise centrifugal fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202402347U (en) |
-
2011
- 2011-12-13 CN CN2011205206680U patent/CN202402347U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120829 Termination date: 20141213 |
|
| EXPY | Termination of patent right or utility model |